Leonard's Periodic Table Of Elements T-Shirt in big bang theory

Leonard's Periodic Table Of Elements T-Shirt

This Leonard's Periodic Table Of Elements T-Shirt worn by leonard in Season 1, Episodes 3 (The Fuzzy Boots Corollary), 8 (The Grasshopper Experiment) and 14 (The Nerdvana Annihilation); Season 2, Episodes 11 (The Bath Item Gift Hypothesis) and 15 (The Maternal Capacitance); Season 3, Episode 2 (The Jiminy Conjecture); Season 4, Episodes 9 (The Boyfriend Complexity) and 13 (The Thespian Catalyst); and Season 5, Episode 6 (The Rhinitis Revelation)